GHS REFERENCE / P-CODES / P284

P284 — In case of inadequate ventilation wear respiratory protection

A prevention statement from GHS Annex 3 — the precautionary half of the label language on SDSs and containers.

At a glance

Official statementIn case of inadequate ventilation wear respiratory protection.
GroupPrevention (P2xx)

Under earlier GHS revisions this appeared as P285; both wordings still circulate.

Which hazards call for P284

Our engine assigns P284 whenever a product carries any of these hazard statements:

H330Fatal if inhaled.
Reference information, not legal or professional advice. Statement texts and allocations follow GHS Rev 9 / 29 CFR 1910.1200 Appendix C as implemented by our classification engine; the regulatory text and agency practice control. Claims last reviewed July 23, 2026.

The engine writes these for you.

When SDS HQ authors an SDS or a container label, it assigns the hazard statements, signal word, pictograms, and precautionary statements from these same tables — automatically, with the calculation shown.

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